diff --git a/src/arcade/patch/env/component/PatchComponentSitesGraph.java b/src/arcade/patch/env/component/PatchComponentSitesGraph.java
index 771147dd6..ce1c7ba96 100644
--- a/src/arcade/patch/env/component/PatchComponentSitesGraph.java
+++ b/src/arcade/patch/env/component/PatchComponentSitesGraph.java
@@ -605,6 +605,22 @@ public double getCircum() {
         public double getFlow() {
             return flow;
         }
+
+        public String getFraction() {
+            StringBuilder sb = new StringBuilder();
+            for (String key : fraction.keySet()) {
+                sb.append(key + ":" + fraction.get(key) + ",");
+            }
+            return sb.toString();
+        }
+
+        public String getTransport() {
+            StringBuilder sb = new StringBuilder();
+            for (String key : transport.keySet()) {
+                sb.append(key + ":" + transport.get(key) + ",");
+            }
+            return sb.toString();
+        }
     }
 
     /**
diff --git a/src/arcade/patch/sim/output/PatchOutputSerializer.java b/src/arcade/patch/sim/output/PatchOutputSerializer.java
index cdfa02efa..6163a4217 100644
--- a/src/arcade/patch/sim/output/PatchOutputSerializer.java
+++ b/src/arcade/patch/sim/output/PatchOutputSerializer.java
@@ -220,12 +220,15 @@ public JsonElement serialize(
      *         "from": (from),
      *         "to": (to),
      *         "type": (type),
+     *         "sign": (sign),
      *         "radius": (radius),
      *         "length": (length),
      *         "wall": (wall),
      *         "shear": (shear),
      *         "stress": (stress),
      *         "flow": (flow),
+     *         "fraction": (fraction),
+     *         "transport": (transport),
      *     }
      * </pre>
      */
@@ -238,6 +241,7 @@ public JsonElement serialize(
             json.add("from", context.serialize(src.getFrom()));
             json.add("to", context.serialize(src.getTo()));
             json.addProperty("type", src.getType());
+            json.addProperty("sign", src.getSign());
             json.addProperty("radius", src.getRadius());
             json.addProperty("length", src.getLength());
             json.addProperty("wall", src.getWall());